User Invisible Diagnostic Region in Distributed Storage
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Solution Overview
Problem
In distributed data storage networks, diagnosing and optimizing individual data storage devices is challenging due to centralized control schemes, making it difficult to distinguish the status and performance of constituent devices, and existing diagnostic methods are complex and not compatible across diverse environments.
Innovation Solution
A controller connected to multiple data storage devices configures a user-invisible diagnostic region using logical block addresses (LBA) beyond the storage capacity, allowing diagnostic information to be accessed via standard read and write requests, enabling real-time diagnostic data retrieval without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If centralized control scheme is used in distributed data storage network, then system management is simplified, but diagnostic capability of individual devices is lost
Solution Approach 1:
The patent segments the storage device into multiple regions: a user-visible storage region and a user-invisible diagnostic region. This segmentation allows individual device diagnostics to be maintained independently within each device while preserving the overall distributed network structure, resolving the contradiction between centralized management simplicity and individual device diagnostic capability.
2Ease of operation
If diagnostic information is stored in user-accessible region, then accessibility is improved, but data integrity is compromised due to user errors
Solution Approach 1:
The patent extracts diagnostic information storage from the user-accessible storage region and places it in a separate user-invisible diagnostic region. This extraction ensures that diagnostic data remains protected from user errors while maintaining accessibility through controlled interfaces, resolving the contradiction between ease of access and data integrity.
3Measurement precision
If complex command protocol is used for diagnostic access, then diagnostic precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements a universal interface that handles multiple diagnostic functions through standard read and write requests. This universal access method allows diverse diagnostic operations to be performed through a single, simple interface mechanism, resolving the contradiction between diagnostic precision and operational simplicity.
4Reliability
If diagnostic region is made user-invisible, then data protection is improved, but access control complexity increases
Solution Approach 1:
The patent introduces an intermediary mechanism (the firmware or controller) that manages access to the user-invisible diagnostic region. This intermediary handles all access requests, providing protection while maintaining simple access control logic, thus resolving the contradiction between data protection and access control complexity.
Data Source
AI summary
A data storage system may generally have a controller connected to multiple separate data storage devices in a distributed network. Each data storage device may be configured with a user invisible diagnostic region where diagnostic information is stored in logical block addresses (LBA) beyond a storage capacity of the respective data storage devices and the diagnostic information can be accessible via read and write requests to LBA beyond the storage capacity of the respective data storage devices.